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Identifiable Intangible Assets (Tables) | 12 Months Ended
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Sep. 30, 2019
Goodwill [Line Items] |
Schedule of Goodwill [Table Text Block] | Changes in the carrying amount of goodwill were as follows:
| 2019
| (in millions)
Balance at beginning of year | $ | 12.1 |
Acquisition of Krausz | 80.1 |
Change in foreign currency exchange rates | 3.5 |
Balance at end of year | $ | 95.7 |
Schedule of Intangible Assets and Goodwill [Table Text Block] | Intangible assets are presented below.
| September 30,
| 2019 |  | 2018
| (in millions)
Capitalized internal-use software: |  |  |
Cost | $ | 30.2 |  |  | $ | 27.6 |
Accumulated amortization | (17.5 | ) |  | (14.2 | )
Net book value | 12.7 |  |  | 13.4 |
Business combination-related: |  |  |
Cost: |  |  |
Finite-lived intangible assets: |  |  |
Technology | 116.6 |  |  | 82.6 |
Customer relationships and other | 370.0 |  |  | 358.8 |
Indefinite-lived intangible assets: |  |  |
Trade names and trademarks | 271.4 |  |  | 266.6 |
| 758.0 |  |  | 708.0 |
Accumulated amortization: |  |  |
Technology | (76.4 | ) |  | (72.9 | )
Customer relationships and other | (260.6 | ) |  | (240.4 | )
| (337.0 | ) |  | (313.3 | )
Net book value | 421.0 |  |  | 394.7 |
Total intangible assets net book value | $ | 433.7 |  |  | $ | 408.1 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 + Details
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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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